Containment building separation system at a nuclear power plant

Abstract

A containment building separation system at a nuclear power plant belongs to the field of providing safe operation of a nuclear power plant in various regimes, including emergency regimes. A system for dividing a containment building of a nuclear power plant into isolated rooms comprises a device for dividing the pressurized volume, which device is arranged in an annular gap between a floor dividing the rooms and a wall of the containment building, an air supply device and an annular collector which is connected to the latter and is connected to inflatable shutters which are capable, in a state filled with air, of isolating air environments of rooms of the containment building and, in a deflated state, of connecting air environments of rooms of the containment building. In an emergency regime, an air supply to the inflatable shutters is stopped, the latter are lowered, completely opening the annular gap and allowing convection throughout the volume of the containment building. The system can be used in containment buildings of nuclear power plants of any type.

Description

technical field [0001] The sealed inner shell isolation system of the containment shell of a nuclear power plant belongs to the technical field of ensuring safe operation of the nuclear power plant under various working conditions, including emergency situations, and relates to air flow control in the containment shell. Background technique [0002] Rooms in buildings with sources of ionizing radiation and / or hazardous emissions typically have supply and exhaust ventilation systems. The design of the ventilation system should ensure that the air permeates from "clean", service rooms to "polluted", unmaintained rooms in one direction. The formation of return air that could cause air pollution in service rooms is not permitted. To prevent it from happening, residual pressure valves are installed in the exhaust holes between the rooms, so as to ensure the directionality of the pressure gradient transmission. Doors, shutters and other devices are provided in other openings in ...

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Problems solved by technology

Furthermore, the diaphragm assembly is not reusable after it has ruptured and must be disassembled and replaced

All of these factors exert a negative influence on the safety of the use of nuclear power plants

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